Year	scale 1-100
1970	46.25
1971	46.25
1972	46.25
1973	46.25
1974	46.25
1975	46.25
1976	46.25
1977	46.25
1978	52.5
1979	52.5
1980	52.5
1981	52.5
1982	52.5
1983	52.5
1984	52.5
1985	52.5
1986	52.5
1987	52.5
1988	52.5
1989	52.5
1990	52.5
1991	52.5
1992	52.5
1993	52.5
1994	52.5
1995	52.5
1996	52.5
1997	52.5
1998	52.5
1999	52.5
2000	52.5
2001	52.5
2002	52.5
2003	52.5
2004	52.5
2005	52.5
2006	52.5
2007	52.5
2008	55.625
2009	58.75
2010	58.75
2011	58.75
2012	58.75
2013	58.75
2014	58.75
2015	61.25
2016	76.25
2017	76.25
2018	76.25
2019	76.25
2020	76.25
2021	76.25
2022	76.25
2023	76.25